package com.pcj.blog.web.admin;/**
 * @param
 * @author pcj
 * @date 2021/12/28 19:11
 * @return
 */

import com.pcj.blog.po.Tag;
import com.pcj.blog.po.Type;
import com.pcj.blog.service.TagService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.validation.Valid;


/**
 *
 * @className TagController
 * @author pengcj
 * @date 2021/12/28 19:11
 */
@Controller
@RequestMapping("/admin")
public class TagController {
    @Autowired
    private TagService tagService;
    @GetMapping("/tags")
    public String tags(@PageableDefault(size=5, sort={"id"},direction = Sort.Direction.DESC)
                                   Pageable pageable, Model model){
        Page<Tag>list=tagService.listTag(pageable);
        model.addAttribute("page",list);
        return "admin/tags";
    }
    //打开新增页面
    @GetMapping("/tags/input")
    public String input(Model model){
        model.addAttribute("tag",new Tag() );
        return "/admin/tags-input";
    }
    @PostMapping("/tags")
    public String addtag(@Valid  Tag tag, BindingResult bindingResult, RedirectAttributes attributes){
        if(bindingResult.hasErrors()){
            return "admin/tags-input";
        }
        Tag tag1=tagService.getTagByName(tag.getName());
        if(tag1!=null){
            bindingResult.rejectValue("name","nameError","该标签已存在，不可重复添加");
            return "admin/tags-input";
        }
        Tag t =tagService.saveTag(tag);
        if(t!=null){
            attributes.addFlashAttribute("message","添加成功");
        }else{
            attributes.addFlashAttribute("message","添加失败");
        }
        return "redirect:/admin/tags";
    }
    @GetMapping("tags/{id}/input")
    public String editInput(@PathVariable Long id, Model model){ //@PathVariable可以拿到路径中的参数，通过id找到当前要编辑的对象，并把这个对象推到前端
        model.addAttribute("tag",tagService.getTagByid(id));
        return "admin/tags-input";
    }

    @PostMapping("/tags/{id}")
    public String edittype(@Valid Tag tag, BindingResult bindingResult,@PathVariable Long id ,RedirectAttributes attributes){
        Tag tag1=tagService.getTagByName(tag.getName());
        if(tag1!=null){
            bindingResult.rejectValue("name","nameError","该标签已存在，不可重复添加");
        }
        if(bindingResult.hasErrors()){
            return "admin/tags-input";
        }
        Tag t=tagService.updataTag(id,tag);
        if(t==null){
            attributes.addFlashAttribute("message","修改失败");
        }else{
            attributes.addFlashAttribute("message","修改成功");
        }
        return "redirect:/admin/tags";
    }

    @GetMapping("/tags/{id}/delete")
    public String delete(@PathVariable Long id,RedirectAttributes redirectAttributes){
        tagService.deleteTag(id);
        redirectAttributes.addFlashAttribute("message","删除成功");
        return "redirect:/admin/tags";
    }

}
